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Rooftop HVAC unit with view of fresh-air intake vent Ventilation duct with outlet diffuser vent. These are installed throughout a building to move air in or out of rooms. In the middle is a damper to open and close the vent to allow more or less air to enter the space.
Pumped air injection systems use a vane pump called the air pump, AIR pump, or colloquially "smog pump" turned by the engine via a belt or electric motor.The pump's air intake is filtered by a rotating screen or the vehicle air filter to exclude dirt particles large enough to damage the system.
Another method of air-starting an internal combustion engine is by using compressed air or gas to drive a fluid motor in place of an electric motor. [3] They can be used to start engines from 5 to 320 liters in size and if more starting power is necessary two or more motors can be used.
Air volume regulator. Variable air volume (VAV) is a type of heating, ventilating, and/or air-conditioning system.Unlike constant air volume (CAV) systems, which supply a constant airflow at a variable temperature, VAV systems vary the airflow at a constant or varying temperature.
Air drawn through the system must be clean, dry and oil free in order to protect the delicate optical equipment including mirrors and lenses. It is crucial that the design of the system ensures that the flow of air does not draw in any contaminants from outside sources.
Schubert: Thematic Catalogue of all his Works in Chronological Order, also known as the Deutsch catalogue, is a numbered list of all compositions by Franz Schubert compiled by Otto Erich Deutsch. Since its first publication in 1951, Deutsch (abbreviated as D or D.) numbers are used for the unique identification of Schubert's compositions.
A short-title catalogue (or catalog) is a bibliographical resource that lists printed items in an abbreviated fashion, recording the most important words of their titles. The term is commonly encountered in the context of early modern books, which frequently have lengthy, descriptive titles on their title pages .